On the morning of March 30, the atmosphere over Illinois was uncommonly warm, humid and unstable for late March.  During the morning hours, an upper level low pressure system was moving over Iowa while an associated cold front moved through Missouri and crossed the Mississippi River into Illinois.  As the front moved into western Illinois, showers and thunderstorms began to develop.  By 4:30 PM CST, strong thunderstorms moved into La Salle and Grundy Counties, producing large hail, up to golf ball size.  Strong thunderstorms producing large hail continued to move northeastward throughout northcentral and northeastern Illinois.  These storms continued to produce large hail and strong, damaging winds into the early evening hours.  After sunset, the storms weakened and dissipated.

Hail in KANKAKEE, ILLINOIS
From 30-MAR-05 19:42:00 to 30-MAR-05 19:47:00 (CST)
Location: KANKAKEE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported to be covering the ground.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:20:00 to 30-MAR-05 19:25:00 (CST)
Location: WOODRIDGE
Magnitude: 1.75 
Reported by: EMERGENCY MANAGER

Golf ball sized hail was reported at the intersection of Interstate 355 and 75th St.

Hail in WILL, ILLINOIS
From 30-MAR-05 16:50:00 to 30-MAR-05 17:13:00 (CST)
Location: PLAINFIELD
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Golf ball sized hail and nickel sized hail reported in Plainfield, 1650-1655 CST.Nickel sized hail reported at the Plainfield library, 1708-1713 CST.Quarter sized hail reported at the intersection of County Line and Theodore Rds., 3 miles NW of Shorewood, 1705-1710 CST.

Hail in GRUNDY, ILLINOIS
From 30-MAR-05 17:38:00 to 30-MAR-05 17:43:00 (CST)
Location: COAL CITY
Magnitude: 1.25 
Reported by: TRAINED SPOTTER

Hail in LA SALLE, ILLINOIS
From 30-MAR-05 18:30:00 to 30-MAR-05 18:47:00 (CST)
Location: OTTAWA
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Nickel sized hail was reported south of Rt. 80 on E. 16th rd. in the Autumnwood subdivision, 1830-1840 CST.The ground was reported to be covered with 2 to 3 inches of quarter sized hail, 1842-1847 CST.

Thunderstorm Wind in LIVINGSTON, ILLINOIS
From 30-MAR-05 15:55:00 to 30-MAR-05 15:55:00 (CST)
Location: STREATOR
Magnitude: 50 EG
Reported by: TRAINED SPOTTER

Cars were blown off the road 2 miles west of Streator, 1 1/2 miles south of State Road 18.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:30:00 to 30-MAR-05 19:35:00 (CST)
Location: WILLOWBROOK
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Quarter sized hail was reported at the intersection of Sunrise and Highland Rds.

Hail in LA SALLE, ILLINOIS
From 30-MAR-05 17:30:00 to 30-MAR-05 18:05:00 (CST)
Location: CEDAR PT
Magnitude: 1.75 
Reported by: LAW ENFORCEMENT

Penny sized hail was reported at Cedar Point, 1730-1745 CST.Golf ball sized hail was reported 1 mile east of La Salle, 1738-1743 CST.Quarter sized hail was reported by NWS Cooperative observer in Peru, 1740-1745 CST.Quarter sized hail was reported by law enforment officials at IL State Police District 17 office in Peru, 1740-1745 CST.Quarter sized hail was reported on East 8th Rd, 3 miles north of Utica, 1744-1749 CST.Golf ball sized hail was reported 2 miles east of East 8th Rd, on North 35th Rd, causing damage to a vehicle, 1750-1755 CST.Quarter sized hail was reported in Earlville by an amateur radio operator, 1800-1805 CST.

Hail in OGLE, ILLINOIS
From 30-MAR-05 16:00:00 to 30-MAR-05 16:05:00 (CST)
Location: POLO
Magnitude: 0.88 
Reported by: EMERGENCY MANAGER

Hail in WILL, ILLINOIS
From 30-MAR-05 19:08:00 to 30-MAR-05 19:13:00 (CST)
Location: CREST HILL
Magnitude: 1.50 
Reported by: LAW ENFORCEMENT

Hail in LIVINGSTON, ILLINOIS
From 30-MAR-05 17:18:00 to 30-MAR-05 17:23:00 (CST)
Location: DWIGHT
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported at the intersection of Rt. 17 and I-55.

Hail in KANE, ILLINOIS
From 30-MAR-05 16:59:00 to 30-MAR-05 17:04:00 (CST)
Location: GENEVA
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Nickel sized hail reported at the intersection of Fabian and Kirk Rds.

Hail in COOK, ILLINOIS
From 30-MAR-05 18:30:00 to 30-MAR-05 18:48:00 (CST)
Location: ORLAND PARK
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Penny sized hail was reported in Orland Park at the intersection of 82nd Ave. and 143rd St, 1830-1835 CST.Nickel sized hail was reported in Chicago Ridge, 1830-1830 CST.Nickel sized hail was reported in Oak Lawn at the intersection of 115th St. and Central Ave., 1832-1837 CST.Penny sized hail was reported in Bridgeview, 1835-1840 CST.Nickel sized hail was reported in Evergreen Park, 1843-1848 CST.

Hail in LEE, ILLINOIS
From 30-MAR-05 18:30:00 to 30-MAR-05 18:35:00 (CST)
Location: PAW PAW
Magnitude: 1.25 
Reported by: TRAINED SPOTTER

Golf ball sized hail was reported about 3 miles north of Paw Paw or 8 miles west of Shabbona.

Hail in COOK, ILLINOIS
From 30-MAR-05 17:30:00 to 30-MAR-05 17:35:00 (CST)
Location: SCHILLER PARK
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail in WILL, ILLINOIS
From 30-MAR-05 17:10:00 to 30-MAR-05 17:15:00 (CST)
Location: SHOREWOOD
Magnitude: 1.50 
Reported by: EMERGENCY MANAGER

Nickel to half dollar sized hail was reported from Shorewood to 1 mile north of Shorewood, 1710-1715 CST.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:30:00 to 30-MAR-05 19:35:00 (CST)
Location: CLARENDON HILLS
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:30:00 to 30-MAR-05 19:35:00 (CST)
Location: BURR RIDGE
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Quarter sized hail was reported at the intersection of 91st St. and Rt. 83.

Hail in MCHENRY, ILLINOIS
From 30-MAR-05 19:20:00 to 30-MAR-05 19:25:00 (CST)
Location: CRYSTAL LAKE
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail in WILL, ILLINOIS
From 30-MAR-05 17:19:00 to 30-MAR-05 17:24:00 (CST)
Location: BOLINGBROOK
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Nickel sized hail was reported near the intersection of I-55 and Rt. 53.

Hail in DE KALB, ILLINOIS
From 30-MAR-05 18:45:00 to 30-MAR-05 18:50:00 (CST)
Location: DE KALB
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported on the campus of Northern Illinois University.

Hail in GRUNDY, ILLINOIS
From 30-MAR-05 18:36:00 to 30-MAR-05 18:55:00 (CST)
Location: MORRIS
Magnitude: 1.25 
Reported by: TRAINED SPOTTER

Quarter sized hail was reported covering the ground in Morris, 1836-1841 CST.Half dollar sized hail was reported in Morris, 1840-1845 CST.Quarter sized hail was reported in Minooka, 1850-1855 CST.

Thunderstorm Wind in MCHENRY, ILLINOIS
From 30-MAR-05 19:20:00 to 30-MAR-05 19:20:00 (CST)
Location: CRYSTAL LAKE
Magnitude: 50 EG
Reported by: GENERAL PUBLIC

Large tree limbs were reported down on side streets.

Hail in COOK, ILLINOIS
From 30-MAR-05 19:22:00 to 30-MAR-05 19:39:00 (CST)
Location: LEMONT
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Golf ball sized hail was reported in Lemont, 1922-1927 CST.Penny sized hail was reported in La Grange, 1932-1937 CST.Quarter sized hail was reported in La Grange, 1934-1937 CST.

Hail in WILL, ILLINOIS
From 30-MAR-05 17:05:00 to 30-MAR-05 17:13:00 (CST)
Location: JOLIET
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Penny sized hail reported at the intersection of Caton Farm and Essington Rds, 1705-1710 CST.Golf ball sized hail reported at Joliet Junior College, 1708-1713 CST.

Hail in WILL, ILLINOIS
From 30-MAR-05 17:09:00 to 30-MAR-05 17:34:00 (CST)
Location: ROMEOVILLE
Magnitude: 1.00 
Reported by: EMERGENCY MANAGER

Hail was reported to be covering the ground in Romeoville, 1709-1714 CST.Quarter sized hail was reported at the National Weather Service office, 1712-1717 CST.Penny sized hail was reported in Romeoville at intersection of Weber and Renwick Rds, 1718-1723 CST.Golf ball sized hail was reported in Romeoville, 1728-1733 CST.Penny sized hail was reported in Romeoville, 1729-1734 CST

Thunderstorm Wind in KENDALL, ILLINOIS
From 30-MAR-05 16:44:00 to 30-MAR-05 16:44:00 (CST)
Location: NEWARK
Magnitude: 50 EG
Reported by: LAW ENFORCEMENT

Power lines reported down.

Hail in LEE, ILLINOIS
From 30-MAR-05 18:40:00 to 30-MAR-05 18:45:00 (CST)
Location: LEE
Magnitude: 1.75 
Reported by: EMERGENCY MANAGER

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:15:00 to 30-MAR-05 19:20:00 (CST)
Location: LOMBARD
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in WILL, ILLINOIS
From 30-MAR-05 17:50:00 to 30-MAR-05 17:55:00 (CST)
Location: WILMINGTON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported near the intersection of Lorenzo Rd. and I-55.

Thunderstorm Wind in WILL, ILLINOIS
From 30-MAR-05 18:00:00 to 30-MAR-05 18:00:00 (CST)
Location: ROMEOVILLE
Magnitude: 60 EG
Property damage: 3K
Reported by: EMERGENCY MANAGER

Large tree limbs blown down onto a house.

Hail in COOK, ILLINOIS
From 30-MAR-05 17:25:00 to 30-MAR-05 18:00:00 (CST)
Location: LEMONT
Magnitude: 1.00 
Reported by: EMERGENCY MANAGER

Quarter sized hail was reported in Lemont, 1725-1730 CST.Quarter sized hail was reported in Chicago Ridge near the intersection of 95th St. and I-294, 1730-1735 CST.Penny sized hail was reported in Bridgeview at the intersection of 79th St. and 78th Ave, 1738-1743 CST.Nickel sized hail was reported in Hometown, 1740-1745 CST.Penny sized hail was reported in La Grange, 1740-1745 CST.Penny sized hail was reported in Bridgeview, 1755-1800 CST.

Hail in DE KALB, ILLINOIS
From 30-MAR-05 18:05:00 to 30-MAR-05 18:07:00 (CST)
Location: SYCAMORE
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Penny sized hail fell for about 90 seconds on Illinois Rt. 23.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 19:25:00 to 30-MAR-05 19:30:00 (CST)
Location: DARIEN
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Hail in LA SALLE, ILLINOIS
From 30-MAR-05 18:32:00 to 30-MAR-05 18:37:00 (CST)
Location: SENECA
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Nickel sized hail was reported covering the ground.

Hail in KANE, ILLINOIS
From 30-MAR-05 19:12:00 to 30-MAR-05 19:17:00 (CST)
Location: CARPENTERSVILLE
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Quarter sized hail was reported and 66 mph wind gust measured with unofficial equipment.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 17:30:00 to 30-MAR-05 17:35:00 (CST)
Location: WILLOWBROOK
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in KANE, ILLINOIS
From 30-MAR-05 16:45:00 to 30-MAR-05 16:45:00 (CST)
Location: CARPENTERSVILLE
Magnitude: 51 EG
Reported by: AMATEUR RADIO

Roof and structural damage reported.

Hail in WILL, ILLINOIS
From 30-MAR-05 19:16:00 to 30-MAR-05 19:21:00 (CST)
Location: LOCKPORT
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Nickel sized hail was reported near the intersection of Bruce Rd. and Lawrence Ave.

Hail in KENDALL, ILLINOIS
From 30-MAR-05 16:45:00 to 30-MAR-05 16:50:00 (CST)
Location: YORKVILLE
Magnitude: 1.00 
Reported by: EMERGENCY MANAGER

Quarter sized hail reported at the intersection of Rt. 47 and Newark Rd.

Hail in KENDALL, ILLINOIS
From 30-MAR-05 16:45:00 to 30-MAR-05 16:50:00 (CST)
Location: YORKVILLE
Magnitude: 1.75 
Reported by: AMATEUR RADIO

Hail in KENDALL, ILLINOIS
From 30-MAR-05 16:50:00 to 30-MAR-05 16:55:00 (CST)
Location: NEWARK
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in DE KALB, ILLINOIS
From 30-MAR-05 18:40:00 to 30-MAR-05 18:45:00 (CST)
Location: SHABBONA
Magnitude: 1.00 
Reported by: EMERGENCY MANAGER

Hail in LA SALLE, ILLINOIS
From 30-MAR-05 16:45:00 to 30-MAR-05 16:50:00 (CST)
Location: MARSEILLES
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in LA SALLE, ILLINOIS
From 30-MAR-05 16:30:00 to 30-MAR-05 16:35:00 (CST)
Location: LEONORE
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Hail in GRUNDY, ILLINOIS
From 30-MAR-05 16:25:00 to 30-MAR-05 17:00:00 (CST)
Location: MORRIS
Magnitude: 1.75 
Reported by: AMATEUR RADIO

Nickel sized hail reported 8 miles west of Morris, 1625-1630 CSTQuarter sized hail reported in Morris, 1635-1640 CST.Penny sized hail reported in Morris, 1638-1643 CST.Quarter sized hail reported near mile marker 115 on I-80, just east of Morris, 1638-1643 CST.Golf ball sized hail reported at the Morris Airport, 5 miles north of Morris, 1640-1645 CST.Quarter sized hail reported in Morris, 1640-1645 CST.Quarter sized hail reported 2 miles north of I-80, on Ridge Rd. in Minooka, 1655-1700 CST.

Flood in WILL, ILLINOIS
From 30-MAR-05 19:20:00 to 30-MAR-05 20:20:00 (CST)
Reported by: TRAINED SPOTTER

Water 6 inches deep was reported covering the road at the intersection of River Rd. and Renwick Rd. in Plainfield.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 17:35:00 to 30-MAR-05 17:40:00 (CST)
Location: DARIEN
Magnitude: 1.00 
Reported by: TRAINED SPOTTER

Quarter sized hail was reported at the intersection of Cass Rd. and 75th St.

Thunderstorm Wind in DU PAGE, ILLINOIS
From 30-MAR-05 17:35:00 to 30-MAR-05 17:35:00 (CST)
Location: DOWNERS GROVE
Magnitude: 55 EG
Reported by: EMERGENCY MANAGER

Power lines down and new homes under construction had walls knocked down.

Hail in DU PAGE, ILLINOIS
From 30-MAR-05 17:35:00 to 30-MAR-05 17:40:00 (CST)
Location: CLARENDON HILLS
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Flood in WILL, ILLINOIS
From 30-MAR-05 19:25:00 to 30-MAR-05 20:25:00 (CST)
Reported by: TRAINED SPOTTER

Street flooding was reported at the intersection of River Rd. and Easy St. in Plainfield.

Hail in WILL, ILLINOIS
From 30-MAR-05 19:05:00 to 30-MAR-05 19:16:00 (CST)
Location: JOLIET
Magnitude: 1.75 
Reported by: LAW ENFORCEMENT

Quarter sized hail was reported at the intersection of Rt. 7 and Rt. 52, 1905-1910 CST.Quarter sized hail was reported at the University of St. Francis, 1910-1915 CST.Quarter sized hail was reported on Kelly Ave., 1910-1915 CST.Golf ball sized hail was reported near St. Joseph Hospital, 1911-1916 CST.

Hail in KANE, ILLINOIS
From 30-MAR-05 19:09:00 to 30-MAR-05 19:14:00 (CST)
Location: ELGIN
Magnitude: 0.75 
Reported by: EMERGENCY MANAGER

Hail in DE KALB, ILLINOIS
From 30-MAR-05 18:44:00 to 30-MAR-05 18:49:00 (CST)
Location: DE KALB
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Thunderstorm Wind in WILL, ILLINOIS
From 30-MAR-05 17:25:00 to 30-MAR-05 17:25:00 (CST)
Location: GOODINGS GROVE
Magnitude: 65 EG
Property damage: 100K
Reported by: NEWSPAPER

A portion of the roof was blown off an indoor sports complex on Bell Rd. near Homer Glen.A tractor-trailer was overturned near Homer Glen.

Hail in COOK, ILLINOIS
From 30-MAR-05 19:30:00 to 30-MAR-05 19:35:00 (CST)
Location: MORTON GROVE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported near the intersection of Golf Rd. and Harlem Ave.

Hail in WILL, ILLINOIS
From 30-MAR-05 19:05:00 to 30-MAR-05 19:10:00 (CST)
Location: BOLINGBROOK
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Penny sized hail was reported at the intersection of Weber Rd. and Interstate 55, 1905-1910 CST.Commonwealth/Jennifer (near Boughton-Weber Rd. intersection) reported penny sized hail, 1905-1910 CST.

Hail in WILL, ILLINOIS
From 30-MAR-05 18:59:00 to 30-MAR-05 19:17:00 (CST)
Location: ROMEOVILLE
Magnitude: 1.75 
Reported by: OFFICIAL NWS OBS.

Golf ball sized hail was reported at the intersection of Renwick Rd. and Weber Rd, 1859-1904 CST.Golf ball sized hail was reported at the National Weather Sevice office, 1912-1917 CST.Quarter sized hail was reported in Romeoville by Emergency Management, 1910-1915 CST.

Hail in WILL, ILLINOIS
From 30-MAR-05 18:55:00 to 30-MAR-05 19:05:00 (CST)
Location: PLAINFIELD
Magnitude: 1.75 
Reported by: EMERGENCY MANAGER

Quarter sized hail was reported 4 miles west of Joliet, at the intersection of County Line Rd. and Theodore St., 1855-1900 CST.Quarter sized hail was reported at the intersection of Rt. 59 and Caton Farm Rd, 1900-1905 CST.Golf ball sized hail was reported in Plainfield, 1900-1905 CST.Quarter sized hail was reported at the intersection of Rt. 7 and Rt. 52, 1859-1904 CST.